#include "include.h"
#include "tft.h"

#define CommEnd()       tft_write_end()
#define WriteData(v)    tft_write_data(v)
#define WriteComm(v)    tft_write_cmd(v)

#define GUI_TFT_SCREEN_ID               0x0

#define GUI_SCREEN_OFS_X                0
#define GUI_SCREEN_OFS_Y                12

static void tft_gui_set_window(u16 x0, u16 y0, u16 x1, u16 y1)
{
    x0 += GUI_SCREEN_OFS_X;
    x1 += GUI_SCREEN_OFS_X;
    y0 += GUI_SCREEN_OFS_Y;
    y1 += GUI_SCREEN_OFS_Y;

    WriteComm(0x2A); // TFT_CASET
    WriteData(BYTE1(x0));
    WriteData(BYTE0(x0));
    WriteData(BYTE1(x1));
    WriteData(BYTE0(x1));

    WriteComm(0x2B); // TFT_PASET
    WriteData(BYTE1(y0));
    WriteData(BYTE0(y0));
    WriteData(BYTE1(y1));
    WriteData(BYTE0(y1));

    tft_write_end();
}

static void tft_read_id(uint8_t *buf)
{
    tft_read_id_cmd(0x04);

    /* dummy clock cycle */
    tft_dummy_clock();

    buf[0] = tft_spi_getbyte();
    buf[1] = tft_spi_getbyte();
    buf[2] = tft_spi_getbyte();
    tft_write_end();
}

void st7789_display_point(uint16_t x1, uint16_t y1, uint16_t color)
{
    TFT_SPI_DATA_EN();
    delay_5ms(200);
    tft_gui_set_window(0, 0, x1, y1);
    tft_frame_start();
    for (int x = 0; x <= x1; x++) {
        for (int y = 0; y <= y1; y++)
        {
            WDT_CLR();
            WriteData(color >> 8);
            WriteData(color);
        }
    }
    tft_write_end();
}

static void tft_240_st7789_init(void)
{
    printf("tft_st7789_init\n");

    tft_hw_reset();

    delay_ms(120);

    WriteComm(0x11);

    delay_ms(120);

    WriteComm(0x36);
    WriteData(0x00);

    WriteComm(0x3A);
    WriteData(0x05);

    WriteComm(0x35);
    WriteData(0x00);

    WriteComm(0xB2);
    WriteData(0x5C);
    WriteData(0x5C);
    WriteData(0x00);
    WriteData(0x33);
    WriteData(0x33);

    WriteComm(0xB7);
    WriteData(0x57);

    WriteComm(0xBB);
    WriteData(0x15);

    WriteComm(0xC0);
    WriteData(0x2C);

    WriteComm(0xC2);
    WriteData(0x01);

    WriteComm(0xC3);
    WriteData(0x14);

    WriteComm(0xC6);
    WriteData(0x16);

    WriteComm(0xD0);
    WriteData(0xA7);

    WriteComm(0xD0);
    WriteData(0xA4);
    WriteData(0xA1);

    WriteComm(0xD6);
    WriteData(0xA1);   //sleep in后，gate输出为GND

    WriteComm(0xE0);
    WriteData(0x70);
    WriteData(0x03);
    WriteData(0x0A);
    WriteData(0x09);
    WriteData(0x09);
    WriteData(0x14);
    WriteData(0x36);
    WriteData(0x54);
    WriteData(0x4C);
    WriteData(0x3C);
    WriteData(0x17);
    WriteData(0x18);
    WriteData(0x2E);
    WriteData(0x2E);

    WriteComm(0xE1);
    WriteData(0x70);
    WriteData(0x08);
    WriteData(0x0E);
    WriteData(0x0A);
    WriteData(0x0A);
    WriteData(0x35);
    WriteData(0x35);
    WriteData(0x44);
    WriteData(0x4C);
    WriteData(0x3A);
    WriteData(0x18);
    WriteData(0x1A);
    WriteData(0x2C);
    WriteData(0x2F);
    WriteComm(0x21);
    WriteComm(0x29);
    WriteComm(0x2C);
}

tft_driver_t tft_driver_240_st7789 = {
    .id = GUI_TFT_SCREEN_ID,
    .init = tft_240_st7789_init,
    .read_id = tft_read_id,
    .set_window = tft_gui_set_window,
};